For most homeowners, a mortgage is the single largest financial obligation they will ever carry. On a standard 30-year, $350,000 loan at 6.5%, you will pay roughly $446,247 in interest alone—more than the price of the house itself. The good news: even modest changes to how you make payments can save you tens of thousands of dollars and cut years off your loan. This guide breaks down the most effective strategies for 2026, with realistic numbers so you can decide which approach fits your budget.
1. Biweekly Payments vs. Monthly Payments
The simplest acceleration strategy requires almost no extra money. Instead of making 12 monthly payments per year, you make a half-payment every two weeks. Because there are 52 weeks in a year, this results in 26 half-payments—equivalent to 13 full monthly payments instead of 12.
That single extra payment each year adds up fast. On our example $350,000 mortgage at 6.5%, switching to biweekly payments shaves approximately 4.5 years off the loan term and saves around $76,000 in interest over the life of the loan.
Who this works for
Biweekly payments are ideal if you get paid every two weeks and want a "set it and forget it" strategy. The per-paycheck amount feels nearly identical to what you are already paying, but the results over time are dramatic.
2. Extra Principal Payments
Making additional payments toward your loan principal is one of the most flexible strategies available. You decide how much extra to pay and when. Even a small, consistent amount makes a measurable difference.
Consider these scenarios on a $350,000, 30-year mortgage at 6.5% (standard monthly payment: approximately $2,212):
| Extra Monthly Payment | Years Saved | Interest Saved |
|---|---|---|
| $100/month | 3.5 years | $56,800 |
| $250/month | 7 years | $114,500 |
| $500/month | 11 years | $183,200 |
| $1,000/month | 16.5 years | $274,600 |
The key insight here is the power of compounding in reverse. Every dollar you pay toward principal today eliminates interest that would have accrued on that dollar for the remaining life of the loan. Early extra payments have a disproportionately large impact because they have more time to compound savings.
Who this works for
This is the best strategy for homeowners with variable income—freelancers, commission earners, or anyone who wants to accelerate payments during good months without committing to a higher fixed obligation.
3. Refinancing When Rates Drop
If interest rates fall meaningfully below your current rate, refinancing can reduce both your monthly payment and your total interest cost. The general rule of thumb is that refinancing makes sense when you can lower your rate by at least 0.75 to 1.0 percentage points and you plan to stay in the home long enough to recoup closing costs.
For example, if you refinance the $350,000 balance from 6.5% to 5.5% on a new 30-year term, your monthly payment drops from $2,212 to about $1,987—a savings of $225 per month. Over the full 30-year term, you save approximately $81,000 in total interest. With closing costs averaging $6,000 to $10,000, the break-even point is roughly 2 to 3 years.
A more aggressive move: refinance at the lower rate but keep making payments at the old, higher amount. This effectively combines refinancing savings with extra principal payments and can slash a decade or more off your payoff date.
4. 15-Year vs. 30-Year Mortgage: The Tradeoffs
Choosing between a 15-year and 30-year mortgage is one of the most consequential decisions a homebuyer makes. The numbers tell a striking story.
On a $350,000 loan at current typical rates (6.5% for 30-year, roughly 5.9% for 15-year):
| Term | Monthly Payment | Total Interest Paid |
|---|---|---|
| 30 years at 6.5% | $2,212 | $446,247 |
| 15 years at 5.9% | $2,940 | $179,200 |
The 15-year mortgage costs an extra $728 per month but saves you $267,047 in interest—a staggering difference. You also build equity far faster, which provides more financial flexibility and security.
However, the 30-year loan offers a crucial advantage: a lower required payment. If your income drops or an emergency arises, the lower baseline gives you breathing room. Many financial advisors recommend taking the 30-year loan but paying it as if it were a 15-year. This gives you the flexibility of the lower required payment while achieving similar savings—as long as you have the discipline to maintain the higher payments voluntarily.
Who should choose 15 years
Homeowners with stable, high income who have already maxed out retirement contributions and built a solid emergency fund. If the higher payment represents less than 25% of your take-home pay, the 15-year term is hard to beat.
Who should choose 30 years
First-time buyers, homeowners with variable income, or anyone who prioritizes cash flow flexibility. You can always make extra payments on a 30-year loan, but you cannot reduce the required payment on a 15-year loan during a tight month.
5. Lump Sum Payments
Windfalls happen: annual bonuses, tax refunds, inheritance, or the sale of another asset. Applying a lump sum directly to your mortgage principal can have a dramatic effect, especially early in the loan when the balance is highest.
On our $350,000 mortgage at 6.5%, a single $10,000 lump sum payment in year 2 saves approximately $24,500 in interest and shortens the loan by about 10 months. The same lump sum in year 15 saves roughly $10,200 and shortens the loan by 6 months. Timing matters: the earlier you make the lump sum, the greater the compounding benefit.
A $25,000 lump sum in year 2 saves roughly $57,000 in interest and eliminates nearly 2 full years of payments.
6. Combining Strategies for Maximum Impact
These strategies are not mutually exclusive. The most effective approach is often a combination tailored to your situation:
- Switch to biweekly payments as your baseline (essentially one extra payment per year with minimal budgeting effort).
- Add an extra $200 to $300 per month toward principal whenever your budget allows.
- Apply any windfalls—tax refunds, bonuses, gifts—directly to principal.
- Monitor interest rates and refinance if rates drop 0.75% or more below your current rate, but keep making payments at the old amount.
A homeowner who combines biweekly payments with an extra $200 per month and a $10,000 lump sum in year 3 can reasonably expect to pay off a 30-year mortgage in roughly 19 to 20 years, saving well over $175,000 in interest.
What to Watch Out For
Before accelerating payments, check for a few potential pitfalls:
- Prepayment penalties: Uncommon on modern conventional loans, but some older or non-conventional mortgages carry them. Read your loan documents or ask your servicer.
- Payment application: When you send extra money, make sure it is applied to principal, not held for the next month's payment. Most servicers allow you to specify this online or by including a note with your check.
- Opportunity cost: If you can invest at a rate consistently higher than your mortgage rate after taxes, the math may favor investing over prepaying. However, the guaranteed "return" of eliminating 6.5% interest is compelling compared to uncertain market returns.
The Bottom Line
There is no single "best" strategy—the right approach depends on your income stability, interest rate, financial goals, and risk tolerance. What is universally true: doing anything extra is better than doing nothing. Even an extra $100 per month saves nearly $57,000 on a $350,000 mortgage. Start with whatever your budget allows, automate it so you do not have to think about it, and increase the amount whenever you get a raise or pay off another debt.
Use our free mortgage payoff calculator to model these strategies with your exact loan details and see how much you can save.
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